baber/WOPTO huggingface dataset:
Patent CA-2048348-A1 (CA)
Title: Polyolefin syntactic foams for pipeline insulation use
Inventor: COLEMAN-KAMMULA SEETHA M L
IPC: C08J9/32
Filed: 1991-08-02
Abstract: A B S T R A C T      POLYOLEFIN SYNTACTIC FOAMS FOR PIPELINE INSULATION USE       An insulating composition comprises a polyolefin, preferably polypropylene, and hollow microspheres, at least some of which have been pre-treated with a chain-scission agent and, optionally, a functionalizing agent for the polyolefin, before addition to the polyolefin melt. The provision of the chain-scission on the microspheres enables the microspheres to be compounded substantially without breakage with low Melt Flow Index polyolefins, with the result that the resultant composite material can be employed in rigorous application areas, for examples as an extruded flowline insulation.
Patent CA-2050068-A1 (CA)
Title: Power factor improving arrangement
Inventor: GLASER RICHARD W
IPC: H02J3/18
Filed: 1991-08-27
Abstract: Abstract of the Disclosure An impedance compensator for adjusting the power factor of a power distribution system by directly measuring impedance at a point in the power distribution system and dynamically adjusting that impedance to be resistive yielding a power factor of one. The compensator dynamically inserts and removes both capacitance and inductance to adjust the impedance. The inductance is utilized to make coarse adjustments to the impedance, whereas the capacitance isutilized to make fine adjustments.
Patent CA-2050296-A1 (CA)
Title: Bioslurry reactor for treatment of slurries containing minerals, soils and sludges
Inventor: EMMETT ROBERT C JR
IPC: C22B3/02
Filed: 1990-03-09
Abstract: A reactor vessel (13) for use in treating slurries containing minerals, soils or sludges contaminated with toxic organic substances is disclosed. The vessel includes a tank (14), having a sealed cover (132), a mixer arrangement (28), an air supply arrangement (15) and an exhaust gas recycling system. The air supply arrangement includes one or more porous, flexible membrane diffusers (100) adapted for introducing gas, in the form of fine bubbles, into a tank contained slurry.
Patent CA-2054183-A1 (CA)
Title: Power gun
Inventor: CHESLO HOWARD M
IPC: E04G23/02
Filed: 1991-10-24
Abstract: ABSTRACT        IS A ELECTRICAL POWERED GUN FOR SQUEEZING      CAULKING FROM A CYLINDER TUBE, WHICH CONSISTS OF A      OPEN BODY FRAME OR CAGE MADE OF STEEL, MOBILIZED BY      A GEER ON A ELECTRIC MOTOR.  THE GEER RIDES THE      SCREW-LIKE PLUNGER ACTIVATED BY A TRIGGER WHICH      THEN THE FACE PLATE PUSHES INSIDE CYLINDER TO FORCE      OUT CAULKING.  THE PLUNGER WILL HAVE 2 GUIDES ON      BOTH SIDES OF HANDLE, SO IS DIRECTED STRAIGHT THROUGH TO THE CENTER OF THE CYLINDER. (OR TUBE OF CAULKING).      TO STOP CAULKING FROM SPILLING OUT WHEN APPLYING, PUSH      AUTO-REVERSE BUTTON TO DISENGAGE FLOW OF THE CAULKING      THE HANDLE IS CLOSED IN BY A HARD PLASTIC COVER      WHERE THE ELECTRIC MOTOR AND WIRES ARE FOUND.  THE      HANDLE IS SHAPED FOR A GOOD EASY GRIP BY THE HAND.
Patent CA-2055926-A1 (CA)
Title: Expandable drill
Inventor: LABROSSE JEROME
IPC: E21B10/34
Filed: 1991-11-20
Abstract: ABSTRACT     The invention relates to improvements in expandable drills and, in particular, to an expandable drill having a two-piece drill body with connectable upper and lower drill body portions. The lower drill body is provided with a set of rotary cutters mounted on blocks which are secured within pockets in the lower drill body. The upper drill body is also provided with a set of rotary cutters mounted on arms which are slidable within corresponding inclined grooves in the upper drill body for relative inward and outward movement with respect to the drill body. Stops are provided at the upper ends of the grooves to limit the upward, and hence outward, movement of the upper rotary cutters. The lower end of the grooves terminate at the lower surface of the upper drill body so that the upper mating surface of the lower drill body acts as the stop for the upper rotary cutter assemblies, limiting the downward, and hence inward, movement thereof. A valve is disposed within the drill body for controlling the flow of drilling fluid to the cutter assemblies. The two-piece drill body provides economy of manufacture and facilitates removal and/or replacement of the cutter assemblies.
Patent CA-2056420-A1 (CA)
Inventor: SU FU
IPC: C07C51/41
Filed: 1990-05-25
Abstract: A process is provided for making bulk calcium magnesium acetate in a substantially pure crystalline form by forming a solution of calcium, magnesium and acetate ions in a substantially non-aqueous solvent and maintaining the solution at a temperature for a sufficient period of time to form crystalline calcium magnesium acetate. The crystalline calcium magnesium acetate contains less than about 0.5 % of impurities and is useful as a deicing agent which does not stain aluminum.
Patent CA-2058052-A1 (CA)
Inventor: AYANABA ABATENI
IPC: A01N63/20
Filed: 1991-12-19
Abstract: ABSTRACT            Biocontrol particles for treating plants infested with nematodes.   The biocontrol particles are granules consisting of spores of bacterial nematicides which are contained in a biodegradable gel matrix formulated for controlled spore release. The bacterial spores are obtained by growing bacteria in nematode hosts which are in turn infesting plant roots.  The roots are comminuted and used to prepare either dried or fresh inocula, which are then encapsulated into gel beads.  Included in the method is a heat-treatment which kills the nematodes while maintaining the viability of the bacterial spores. To kill or inhibit the reproduction of nematodes, the biocontrol granules are deposited near plants or sowed with seeds, after which spores are released gradually through the biodegradation of the gel matrix of the granules.
Patent CA-2058526-A1 (CA)
Title: Method of treating salt bath liquid
Inventor: ISHIBASHI TADAYA
IPC: C23G1/32
Filed: 1991-12-24
Abstract: ABSTRACT      The present invention relates to the method of treating the salt bath liquid.   In the surface treatment of the steel material by the use of the high-temperature salt bath mainly comprising sodium hydroxide and sodium nitrate, the salt ingredients contained in the washings generated are separated to be recovered and the metal salts contained are separated in the form of the insoluble salts.   The salts contained in the nitrate radical-containing liquid system are recovered as the free acids again, the alkalies being recovered, and the reagents contained in the overflow from the salt-washing tank being recovered.   The anode chamber liquid generated in the recovering operation of the reagents is returned to the washing tank again to increase the concentration of the salts.   The anode chamber liquid is poured into the pickling tank to reduce the oxidizing soluble metal salts contained in the washings by iron within the pickling tank, whereby the oxidizing soluble metal salts are insolubilized.   The mixture liquid of the overflows from the respective tanks and the washing water for removing the foreign matters in the salt bath is mixed with the nitric acid-containing liquid for pickling the steel material and then sodium hydroxide is supplied to alkalize.          Thus, the dissolved metal compounds in the liquids, which have been used for the treatment, are separated into the insoluble solid metal hydroxides and the liquid of the soluble salts without mixing the insoluble alkalies.
Patent CA-2058669-A1 (CA)
Inventor: NAKAZAWA ATSUSHI
IPC: G06K7/10
Filed: 1991-12-31
Abstract: A laser beam scanner for use in a code reader or the like including more than two optical-path-length changing units inserted in the beam path to change the optical path length of the beam between the beam emitting unit and the scanning unit such that the distance from the scanner to the focal point of the beam can be changed.  The optical-path-length changing units are controlled by a control unit which receives an output from a distance measuring unit.  The distance measuring unit measures the distance from the laser beam scanner to the object to be scanned and indicates to the control unit to adjust the optical-path-length so that the focal point of the beam is at the same distance as the object to be scanned.
Patent CA-2060740-A1 (CA)
Title: Three roll coating machine
Inventor: SEYMOUR RONALD P
IPC: B05C1/08
Filed: 1992-02-05
Abstract: ABSTRACT    This invention relates to an improved three roll coating machine that is useful in coating various substrates with various coating materials.  The key to the improvement in the machine is the use of a pneumatically controlled application blade in conjunction with a new and novel pneumatically and micro controlled offset roller.
Patent CA-2061003-A1 (CA)
Inventor: SAGANE TOSHIHIRO
IPC: C07C5/22
Filed: 1992-02-11
Abstract: A process for isomerization of an endo-form of aromatic group-containing norbornenes represented by the following formula (I) to an exo-form which comprises bringing the endo-form into contact with a solid acid catalyst.      wherein p is 0 or an integer of 1 or more, q and r are each 0,1 or 2, R1 to R15 are each independently hydrogen or halogen atom, aliphatic hydrocarbon group, aromatic hydrocarbon group or alkoxy group, R5 (or R6) are R9 (or R7) may be linked together through an alkylene group of 1-3 carbons or may be directly linked together.
Patent CA-2061869-A1 (CA)
Title: Cycloolefin (co)polymers with a narrow molecular weight distribution and a process for the preparation thereof
Inventor: BREKNER MICHAEL-JOACHIM
IPC: C08F32/08
Filed: 1992-02-26
Abstract: Abstract of the disclosure Cycloolefin (co)polymers with a narrow molecular weight distribution and a process for the preparation thereof Polymers of polycyclic olefins such as, for example, norbornene  or  tetracyclododecene,  or  copolymers  of polycyclic olefins with cycloolefins and/or 1-olefins with a very narrow molecular weight distribution are obtained without ring opening by a polymerization in which a catalyst which is composed of an aluminoxane and of a stereorigid,  chiral metallocene compound of an element of groups IVb to VIb is used, and in which the reaction is stopped at a time when the molecular weight distribution Mw/Mn of the polymer formed is < 2.
Patent CA-2063906-A1 (CA)
Inventor: MATOUSEK ROBERT A
IPC: A01F12/44
Filed: 1992-04-02
Abstract: A combine cleaning system including a fan and a cleaning sieve which coact with each other to separate chaff and unthreshed tailings from grain.  The sieve defines a grain cleaning area comprised of an air foil section extending rearwardly from a forward edge of the sieve and a slat or louvered section  downstream of the air foil section.  The air foil section provides a first level of cleaning to the threshed materials deposited on the grain cleaning area while the slat section provides a second level of cleaning to the material received thereon.  Preferably, the air foil section comprises about 60% to about 85% of the grain cleaning area.
Patent CA-2065398-A1 (CA)
Title: Dispositif permettant l'evaporation de liquides volatils
Inventor: FOX RODNEY T
IPC: A01M1/20
Filed: 1990-08-13
Abstract: Le système proposé servant à rendre sous forme de vapeur n'importe quel liquide volatile, parmi un très large éventail, se compose d'un réservoir muni d'une extrémité ouverte fermée par un élément imperméable au liquide et perméable à la vapeur. Un rebord entoure l'ouverture du réservoir et l'élément est fixé jusqu'au rebord dans une multiplicité d'endroits différents, chacun d'entre eux définissant une zone respective de l'élément fixé par la liaison et mouillable par le liquide volatil. Ainsi, on peut utiliser un seul système pour fournir n'importe quel matériau volatil, parmi un large éventail, simplement en déterminant la zone de surface à l'intérieur de la liaison à mouiller par le liquide volatil pour obtenir le taux désiré de vapeur libérée pour un matériau volatil choisi et la fixation de cet élément au rebord à un endroit pour définir la zone de mouillage déterminée de l'élément.
Patent CA-2065601-A1 (CA)
Title: Process of recovering platinum group metal
Inventor: EZAWA NOBUYASU
IPC: C01G55/00
Filed: 1992-04-08
Abstract: Disclosed is a process of recovering a platinum group metal from a waste catalyst comprising a first process which comprises heating and melting the catalyst impregnated with tire platinum group metal, copper and/or the oxide of copper, a flux component and a reductant component to form a layer containing the metal copper into which the platinum group metal is absorbed and another layer of the oxide, and then separating the metal copper; and a second process which comprises supplying air or oxygen as an oxidant to the separated metal copper fur oxidizing under heating and melting to form a layer of partially oxidized metal copper and another layer of the metal copper containing the concentrated platinum group metal, and separating it. This process enables the economic recovering of the platinum group metal from the waste catalyst in a short period of time with high recovery rate.
Patent CA-2067776-A1 (CA)
Title: Surgical instrument with input power transducer
Inventor: DODICK JACK M
IPC: A61M1/00
Filed: 1990-10-24
Abstract: A surgical instrument in the form of, for example, a two mm needle (10) has an open distal aspiration port (22, 22a, 36) for holding tissue to be fractured. An optical fiber (26) extends along the length of the needle and has its distal end positioned close to a metal target (24; 24A, 24a, 34). Pulses of laser energy are discharged from the distal end of the optical fiber to strike the tar-get. The target acts as a transducer converting the electromagnetic energy to mechanical shockwaves that are directed onto tissue in an operating zone adjacent to the aspiration port. The mechanical shockwaves cause the tissue to fracture and the tissue togeth-er with irrigating fluid is drawn out through an aspirating passageway (20). A  flexible tube (32) as the needle enhances access to various areas where tissue is to be fractured
Patent CA-2069325-A1 (CA)
Title: Disposable back support
Inventor: TOSO VICTOR
IPC: A47C16/00
Filed: 1991-08-16
Abstract: A back support device which supports the lower back of the user enabling the user to sit in an upright position for extended periods of time formed of a flexible back conforming support panel (100) having elongated sleeves (114) and a unitary strap (16) threaded through the sleeves forming adjustable loops (18, 20) which engage the knees of a user to tension the support against the wearer's back.
Patent CA-2069570-A1 (CA)
Title: 6-substituted steroid products containing a thioethyl group in position 10; process for preparing the same and intermediate compounds thereof; their use as therapeutic agents and pharmaceutical products containing them
Inventor: GOURVEST JEAN-FRANCOIS
IPC: A61P15/00
Filed: 1992-05-26
Abstract: The subject of the invention is the products of general formula (I): 
<IMAGE>
 in which 
 
  the substituent R represents an alkyl, alkenyl or alkynyl radical having not more than 4 carbon atoms, 
  Y represents an oxygen atom or a residue: 
<IMAGE>
 in which R1 represents a hydrogen atom or an acyl radical, 
  n represents an integer from 0 to 2, 
  D represents an oxygen atom or a residue 
<IMAGE>
 
  A and B together form an alpha epoxide functional group, or with the carbon atoms to which they are attached, a second bond between these carbons. 
 
<??>These products possess advantageous pharmacological properties which justify their use as medicinal products.
Patent CA-2070618-A1 (CA)
Title: Epoxy resin composition for electrical laminates
Inventor: IMURA TETSUROH
IPC: C08G59/14
Filed: 1992-06-05
Abstract: A B S T R A C T           EPOXY RESIN COMPOSITION FOR ELECTRICAL LAMINATES      An epoxy resin composition for use in electrical laminates which contains as essential components an epoxy resin, hardener, and solvent, characterized in that said epoxy resin is at least one kind of cyclic terpene skeleton-containing epoxy resin which is selected from the group consisting of (1) a cyclic terpene skeleton-containing epoxy resin produced by the process in which a phenolic compound is added to a cyclic terpene compound to give a cyclic terpene skeleton-containing polyhydric phenolic compound, which is subsequently reacted with an epihalohydrin, (2) an epoxy resin as a reaction product of said cyclic terpene skeleton-containing epoxy resin (1) and a polyhydric phenolic compound, and (3) an epoxy resin as a reaction product or said cyclic terpene skeleton-containing epoxy resin (1), another epoxy resin, and a polyhydric phenolic compound.
Patent CA-2070708-A1 (CA)
Inventor: KASAI ICHIRO
IPC: H01L31/0216
Filed: 1992-06-08
Abstract: The light receiving or back-side surface (22) of an indium antimonide  (InSb)  photodetector device  (10)  sub-strate (12) is cleaned to remove all oxides of indium and antimony therefrom.  Passivation and/or partially visible light blocking layers (26, 28) are then formed thereon of a material which does not react with  InSb to  form a structure which would have carrier traps therein and cause flashing.  The optical cutoff wavelength and thickness of the  partially  visible  light  blocking  layer  (28)  are selected to suppress the avalanche effect in the device (10) at visible wavelengths.  This enables the device (10) to  operate  effectively  over  a  wide  wavelength  range including the visible and infrared bands.  The passivation and/or partially visible light blocking layers (26, 28) may be a thin layer of a semiconductor such as germanium, or silicon  dioxide  and/or  silicon  nitride  followed  by  a partially visible light blocking silicon layer.
Patent CA-2070964-A1 (CA)
Title: Glare-reduced shield assembly for sun visor
Inventor: KEENAN JOHN B
IPC: B60J3/02
Filed: 1992-06-10
Abstract: ABSTRACT OF THE DISCLOSURE       GLARE-REDUCED SHIELD ASSEMBLY FOR SUN VISOR             A retractable glare-reducing shield assembly comprises a sleeve defining an open-ended tubular passage and including a pair of overlapping side panels forming between them a chamber in which a glare-reducing shield is received.  The shield has one end extending through a suitable opening of the chamber so that it can be made to move between an extracted position,  where its major portion extends out of the chamber and a retracted position where its major portion lies in the chamber. Constraining arrangements allow the shield to be moved only between the extracted and retracted positions.
Patent CA-2073031-A1 (CA)
Title: Anti-cd4 antibody homologs useful in prophylaxis and treatment of aids, arc and hiv infection
Inventor: BURKLY LINDA C
IPC: C07K16/00
Filed: 1991-11-27
Abstract: Anti-CD4 antibody homologs, DNA sequences and recombinant DNA molecules encoding them, prophylactic, immu-notherapeutic and diagnostic compositions comprising those antibody homologs, and methods for preventing or treating diseases in mammals, including humans, caused by infective agents whose primary targets are CD4+ lymphocytes. Such diseases in-clude acquired immune deficiency syndrome ("AIDS"), AIDS related complex, and human immunodeficiency virus infec-tion.
Patent CA-2073169-A1 (CA)
Title: Organic glass for optical parts
Inventor: TORII TADASHI
IPC: C08F299/06
Filed: 1991-10-30
Abstract: ABSTRACT OF THE DISCLOSURE     The invention provides an organic glass for optical parts, in which the main polymer component is constituted by a bipolymer consisting of (a) a diallyl ester of diphenic acid, and (b) an urethane acrylate having vinyl groups introduced into both its ends by the reaction of a chainlike polyurethane having hydroxyl groups at both its ends, obtained by the reaction of a diisocyanate component with a diol component, with acrylic or methacrylic acid. This organic glass for optical parts has a high refractive index and excels in transmittance, impact resistance and other physical properties as well, so that it can be applied to optical parts to which only inorganic glass has been applied so far in the art.
Patent CA-2074361-A1 (CA)
Title: Merosin, nucleic acids encoding, fragments and uses thereof
Inventor: SANES JOSHUA R
IPC: C12Q1/68
Filed: 1991-01-30
Abstract: This invention provides a purified protein, having an apparent molecular weight of about 800 kDa, designated merosin. Also provided is a substantially pure heterotrimeric laminin variant comprising the structure M-X-B2, wherein M is the M polypeptide of merosin; X is selected from the group consisting of the B1 chain of laminin and S-laminin; and B2 is the B2 chain of laminin. Also provided is an isolated nucleic acid sequence which encodes merosin.  The invention further provides antibodies, vectors, and the expression of recombinant proteins by use of a host vector system. The invention also provides the use of merosin to promote neurite growth.
Patent CA-2075118-A1 (CA)
Inventor: KINDLER ANDREW
IPC: C23C22/83
Filed: 1992-07-31
Abstract: An improved method of providing a protective coating on the surface of aluminum or aluminum alloys, comprising: removing contaminants from the surface; exposing the surface to water at 50 to 100°C to form a porous coating on the surface; and exposing the boehmite -coated surface to an aqueous solution comprising a cerium salt and a metal nitrate at a temperature of 70 to 100°C. Oxides and hydroxides of cerium are formed within the pores of the boehmite to provide the protective coating, which provides corrosion resistance and improved paint adhesion.
Patent CA-2076034-A1 (CA)
Title: Liquid metering and transfer valve assembly
Inventor: DEL VALLE ROBERTO
IPC: G01N1/00
Filed: 1991-12-05
Abstract: A liquid metering and transfer valve assembly having the capability of metering, isolating, transfering and delivering precise microliter volume aliquots of a blood sample, from a source thereof, to mixing and testing means of an electronic blood analysis system for analysis, and further, carrying a loop (92) for metering and isolating an additional sample aliquot within said valve assembly in the loop, a first dedicated passageway (70) for introducing a first fluid to said loop (92), to force said additional aliquot from its isolated location to a first dedicated portion (114) of the valve assembly displaced from said loop (92) and a second dedicated portion (68) of said valve assembly to establish a flow path for introducing a lysing reagent to the first dedicated portion (114) to force said additional aliquot from its displaced disposition, as a lyse reagent/aliquot mixture, to a selected additional mixing and testing chamber (108) exterior of said valve assembly without contaminating any interior flow path traversed by a blood sample and associated diluent thereof within the valve assembly.